<template>
  <div class="login-container">
    <el-form
      ref="loginForm"
      :model="loginForm"
      :rules="rules"
      class="login-form"
      label-position="left"
      auto-complete="on"
    >
      <div class="title-container">
        <h3 class="title">登录小程序报名管理系统</h3>
      </div>
      <el-form-item prop="username">
        <span class="icon-container">
          <i class="iconfont iconxingmingyonghumingnicheng"></i>
        </span>
        <el-input
          ref="username"
          type="text"
          v-model="loginForm.username"
          placeholder="请输入用户名"
          name="username"
          tabindex="1"
          autocomplete="on"
        />
      </el-form-item>
      <el-form-item prop="password">
        <span class="icon-container">
          <i class="iconfont iconmima"></i>
        </span>
        <el-input
          ref="password"
          :type="passwordType"
          v-model="loginForm.password"
          placeholder="请输入密码"
          name="password"
          tabindex="2"
          autocomplete="on"
          @keyup.enter.native="handleLogin"
        ></el-input>
        <span class="show-pwd" @click="showPwd">
          <span class="icon-container">
            <i
              :class="[
                'iconfont',
                passwordType === 'password' ? 'iconbukejian' : 'iconyanjing'
              ]"
            ></i>
          </span>
        </span>
      </el-form-item>
      <el-button
        :loading="loading"
        type="primary"
        @click.native.prevent="handleLogin"
        class="loginbutton"
        >登录</el-button
      >
    </el-form>
  </div>
</template>

<script>
import LoginService from "../service/login";
let loginService = new LoginService();
export default {
  name: "Login",
  data() {
    const validateUsername = (rule, value, callback) => {
      if (value.length <= 0) {
        callback(new Error("用户名异常"));
      } else {
        callback();
      }
    };
    var validatePassword = (rule, value, callback) => {
      if (value.length <= 0) {
        callback(new Error("密码异常"));
      } else {
        callback();
      }
    };
    return {
      loginForm: {
        username: "",
        password: ""
      },
      rules: {
        username: [
          { validator: validateUsername, trigger: "blur", required: true }
        ],
        password: [
          { validator: validatePassword, trigger: "blur", required: true }
        ]
      },
      loading: false,
      passwordType: "password"
    };
  },
  methods: {
    showPwd() {
      if (this.passwordType === "password") {
        this.passwordType = "";
      } else {
        this.passwordType = "password";
      }
      this.$nextTick(() => {
        this.$refs.password.focus();
      });
    },
    handleLogin() {
      let username = this.loginForm.username,
        password = this.loginForm.password;
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true;
          loginService
            .loginAction({ username, password })
            .then(retrunMess => {
              if (retrunMess.error_code === 0) {
                this.loading = false;
                this.$router.push({ path: "/" });
              } else {
                this.loading = false;
                return;
              }
            })
            .catch(() => {
              this.loading = false;
            });
        }
      });
    }
  }
};
</script>

<style lang="scss">
$bg: #283443;
$light_gray: #fff;
$cursor: #fff;
@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}
/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;
    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;
      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }
  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;
.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;
  .icon-container {
    padding-left: 10px;
  }
  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 260px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }
  .loginbutton {
    width: 100%;
  }
  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;
    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }
  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }
  .title-container {
    position: relative;
    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }
  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
</style>